Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
  • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
  • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
  • B23K35/24—Selection of soldering or welding materials proper
  • B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
  • B23K35/302—Cu as the principal constituent

Definitions

• the present invention relates to a low-cost C-Ag-based alloy filler material having good cold workability, brazing property, and low vapor pressure despite its relatively low content. .
• the brazing material when manufacturing an electron tube or a vacuum tube gutter by vacuum brazing, if the brazing material is exposed to a vacuum brazing atmosphere, and if the amount of component evaporation is large, the brazing member is required. And contaminate the inner wall of the vacuum furnace. Furthermore, during use, the brazing part is exposed to a high temperature in a vacuum, which lowers the degree of vacuum in the electron tube and vacuum tube, and lowers the vapor pressure because the tube part is stained. Lumber having the following characteristics is used. Typical filler materials having these low vapor pressures include Ag-Cii alloy filler material (J "JS) with a composition consisting of Cit 2it to 29, Afir and unavoidable impurities.
• J "JS Ag-Cii alloy filler material
• the inventors of the present invention aimed at obtaining a material having an excellent Af content, a good brazing property and a low cold workability, and a low steam content.
• a good material was obtained from the research.
• the wood according to Honoki Akira contains: 35% to 50%, 'Si: 1 to 6%, and, if necessary, at least one of — and Contains 1 to 4 species and at least one of Li and 0.01 to 0.5 of one species and 1 to 5 of at least one of F & Ni and Co And the balance is C and unreachable impurities.
• Cu-based alloy brazing material is not only a fool with good cold workability, but also has much better brazing properties than conventional Ag-C "based alloy brazing material, which has a high content. According to them, they have obtained the finding that they have low vapor pressure characteristics.
• the present invention has been made on the basis of the above findings, and the reason for limiting the component composition range to the above description will be described below. .
• the ⁇ component has the effect of improving the cold workability of the wax, lowering the melting point of the wax, and improving the wettability.
• the Ag component can be cold-worked sufficiently in the range of 35% to 50% in foils and ultra-fine, and has improved wettability, fluidity, and vapor pressure.
• the Si component improves the wettability without increasing the vapor EE of the brazing material, and uses the ternary eutectic of C-Afi-Si.
• these components have a further lowering of the melting point of the brazing material, and have an even use to further improve wettability. Included as necessary when low melting point and better wettability are required. If the content is 1 to 4, it is preferable because the above-mentioned effect can be obtained without impairing the cold workability. Therefore, the content is set to 1 to 4%.
• these components have a uniform action to improve the strength of the filler metal without reducing the ductility of the filler material, they are selectively contained in all places where 'higher strength is required'. . If the content is 1 to 5, it is preferable because the desired strong change improving effect is ensured and the melting point does not increase without impairing the cold workability. Was defined as 1 to 55 ⁇ .
• the filler material of the present invention is inexpensive due to its relatively low A3 content, and has good cold workability despite its relatively low Afir content. ⁇ It is possible to work on ultra-fine wires], and it has very good brazing properties and extremely low vapor pressure, so it is possible to perform good brazing work. It has industrial characteristics that can form a brazed portion.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Ceramic Products (AREA)
• Physical Vapour Deposition (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (1)

Family

ID=15951635

Family Applications (1)

Country Status (4)

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Citations (5)

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• 1980
  • 1980-12-08 JP JP55172965A patent/JPS5797891A/ja active Granted
• 1981
  • 1981-11-18 EP EP81903070A patent/EP0065575B1/en not_active Expired
  • 1981-11-18 WO PCT/JP1981/000338 patent/WO1982002013A1/ja not_active Ceased
  • 1981-11-18 US US06/406,236 patent/US4411864A/en not_active Expired - Lifetime

Patent Citations (5)

Non-Patent Citations (1)

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